Total primary energy supply (TPES) is made up of production + imports - exports - international marine bunkers - international aviation bunkers ± stock changes.
Note: In October 2008 the IEA hosted the third meeting of InterEnerStat. This group is made up of 24 international organisations that collect or use energy statistics. One of the objectives of the group is to improve the quality of energy data by harmonising definitions for energy sources and flows. As a result of this meeting, the IEA has decided to align its energy statistics and balances with most other international organisations and to treat international aviation bunkers in the same way as international marine bunkers.
Starting with this edition, international aviation bunkers will no longer be included in the transport sector at the country level. It will be subtracted out of supply in the same way as international marine bunkers.
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